I used MB_YESNOCANCEL as a flag in a MessageBox() and, oddly enough, the "Cancel" pushbutton doesn't have a hotkey.
The first letter of "Yes" and "No" appear underscored: okay, I type them and it's done.
"Cancel", marvel, doesn't have a hotkey in the manner of its companions.
I learned by chance the "ESC" key functions as a hotkey for "Cancel", no matter what pushbutton is the default.
An underscored C, notwithstanding, would fit like a glove for "Cancel", making the pushbuttons uniform and more eye-appealing, not to say more aesthetic or attractive, all the three with their corresponding first letter as hotkeys.
Where should I start modifying something?